[FFmpeg-trac] #625(avcodec:closed): support 2/3/5bit IMA ADPCM

[FFmpeg]

#625: support 2/3/5bit IMA ADPCM
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             Reporter:  ami_stuff      |                    Owner:
                 Type:  enhancement    |                   Status:  closed
             Priority:  wish           |                Component:  avcodec
              Version:  git-master     |               Resolution:  fixed
             Keywords:  adpcm roundup  |               Blocked By:
             Blocking:                 |  Reproduced by developer:  1
Analyzed by developer:  0              |
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Comment (by ami_stuff):

 There is a mention of IMA 3bit here, but I don't know how to test it:

 https://fossies.org/dox/oss-v4.2-build2011-src-gpl/ossplay_8h_source.html
 (AFMT_MS_IMA_ADPCM_3BITS)

 Here is Cool Edit manual:

 http://dmt.zjlsedu.org/longresty/301/040/050/L000000000122370.pdf

 and I found also this:

 https://www.powerdeveloper.org/blog/grzegorz%20kraszewski/did-i-write-
 something-about-adpcm

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Ticket URL: <https://trac.ffmpeg.org/ticket/625#comment:25>
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